# What letter is used to denote acceleration?

All primary school, high school, and college students must know this. Acceleration appears in many physical formulas and is defined as the measure of change in velocity per unit of time.

**What letter is used to denote acceleration?**

Acceleration is denoted by the lowercase letter “a”. It most likely comes from the first letter of the word “acceleration” in English.

## Sample formula for acceleration

Below, we present the most commonly encountered and basic formula for acceleration. The formula uses the change in velocity (ΔV) and the time in which this change occurred (Δt).

a = \frac{\Delta V}{\Delta t}

When using the above formula, it is important to ensure that the units of velocity correspond to the unit of time. For example, if time is measured in seconds (s), then velocity should be entered into the formula as the change in seconds, which is the quantity of meters per second (m/s).

For example, if we have a car that accelerated from 0 to 100 km/h in 8 seconds, we first convert 100 km/h to m/s. This velocity is equal to 27.78 m/s. By substituting into the formula:

a = \frac{27.78m/s}{8s}=3.47 m/s^2

Therefore, the acceleration (*a*) of the car in this example is 3.47 m/s^{2}.

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